Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.62-4.205.9-6.3
1
7.18
👆🏻
Fracture
-
Conchoidal, Uneven
Cleavage
None
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
Mohs Hardness
7-7.54.5-5
2
10
👆🏻
Chemical Composition
(Fe,Mg) 3Al 2(SiO 4) 3gemdat.org , Management Team (2012)
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references